Third to edward c



(No Model.) l 1 s. A. JLNNINGS.

- V BLLL RINGLNG VALVE.'

No., 543,250. y Patented July 23,- 1895.

YUNITED STATES PATENT OFFICE.

SAMUEL ARTHUR JENNINGS, OF S'I. LOUIS, MISSOURI, ASSIGNOR OF ONE- THIRD TO EDWARD O. MEISSNER, OF SAME PLACE.

BELL-RINGING VALVE.

SPECIFICATION forming part of Letters Patent No. 543,250, dated July as, 1895.

Application tiled November 30, 13794. Serial No. 530,310. (No model.)

vrTo all whom, t may concern.-

Be it known that I, SAMUEL ARTHUR JEN- NIlvGs, a subject of the Queen of Great Britain, residing at St'. Louis, State of Missouri, have invented certain new and useful Improvements in Bell-Ringing Valves, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

Myinvention has relation to improvements in bell-ringers; and -it consists in the novel ,arrangement and combination of parts more "fully set forth in the specification and pointed IsY out in the claims. r

In the drawings, Figure 1 is a side elevation of a bell mounted in its frame, the bell being at the limit of its upward swing and in oonnection with the bell-operating device forming my invention. Fig. 2 is a middle vertical -longitudinal section taken through the valvecasing. Fig. 3 is a detail elevation of -the main valve-stem. Fig. 4 is a section on the line yy of Fig. 3, showing the air-groove and vthe radial ports communicating with the hollow portion of the stem. Fig. 5 is a section on Vline m a: of Fig. 3, showing the lateral passages leading to the bottom of the air-groove; and Fig. 6 is a detached view of the nut which secures the main stem'V to the reciprocating piston confined within the valve-casing.

The object of my invention is to construct auid-operated bell-ringer valve-that is, Va valve which when properly harnessed to a locomotive-bell will ring the latter until such time as the supply of air or 4similar Iiuid is shut off.

Referring to the drawings,the valve-casing is composed of an upper section 1 and a lower section 2, the meeting ends of the two sections being respectively interiorly and exteriorly screwthreaded, by whichl means they are v and upper sectionsy of the casing.

screwed to one another,but limited by the annular shoulder 3 of the lower section.

.Within a suitable groove 4 adjacent to the suitable packing-ring 11, as shown in Fig. 2. 65 C The stem is limited in its downward movement by the shoulder 14 striking the inner surface of the section 2. The head 15 at the upper end of the solid portion of the stem .operates within a suitable cavity 16 of a re- 7o ciprocating piston 17 in the section 1 of the casing. The stem 8,- with its head 15, is coupled to the hollow piston by means of av nut 18 having a lateral opening 19 adapted to receive the stem proper, as shown in Fig. 2. Suitable packing-rings 2O are interposedl between the piston and the inner walls of the casing, as shown. The portion of the hollow part of the stem which passes through the guide-plate 6 is provided with a superficiallongitudinal air-groove 21, having lateral basal extensions 22 to better facilitate the initial passage of the air into it, the groove establishing, when the stem is in its lowest position,communication between the lower The inner exhaust-passage 23 of the hollow portion of the stem establishes communication between -the outer air and the section 1 through the ports24= adjacent to the shoulder 25 formed at the juncture of the solid and hollow portions of the stem.

The sectional view of the valve in Fig. 2 shows Vthe relative position of the parts when the piston 17 has been forced to its highest 95 position by the action of the compressed air which has entered the casing 1 under the surface of said piston. To the upper reduced end 26 of the piston is secured a fork27, to which is pivoted .the link 28, having a longiroo tudinal slot 29, within which is adapted vto travel a pin 30 projecting from the crank-arm 31 secured to the bell-trunnion.

The valve-casin g is secured to the bell-frame 32 by means of a bracket or arm 33, as best seen in Fig. 2. When the piston has been driven to its highest position,as indicated in Fig. 2, the'position of the bell is las shown in Fig. 1. The bell now swings back to its vertically-hanging position. As it does so it drives the piston 17 downward,duringwhich time the air within the chamber of the section 1 is exhausting through the ports 24, passage 23, and exhaust extension 10 into the atmosphere. Finally, as the piston descends the nut 18 strikes the shoulder 25, as shown in dotted lines in Fig. 2, forcing-the stem downward sufficiently to establish communication between the chambers of the sections 1` and2 ma the groove 21, the bell itself by its .momentuml having by this time passed a slight ,distance to the left of its vertically-hanging position. Compressed air now passes through the pipe 34 and inlet 35 of the section 2 into the chamber ot' said section, thence ma the groove 21 under the piston 17, forcing thelatter up and carrying the bell to its highest position on the left of its vertically-hanging position. Then by the upward stroke of the piston the nut 18 (just before the piston has reached the limit ot' its upward stroke) engages with the head 15, forming part of the stem 8, raising the-latter sufciently to close the communication between the-chambers of the sections 1 and 2 and opening the exhaustpassages, as shown in Fig. 2, when the parts are once more in position for a repetition of the previous operation.

When the stem is in its highest positionthat is,when communication between the two sections of the easing is closedthe bevelshoulder 36 on the-hollowportion of the stem has a seat on the correspondingly-beveled surface formed at the edge of the opening in the depending portion or ridge 7 of the guide-plate. The plate 6 forms a working jointatall times for the reciprocating stem, and when said stem is in its highest position, as indicated in Fig. 2, the plate forms an vabsolute seat rfor said Stem.

37 represents a spring-controlled rod, whose terminal nut 38 slides in the slot 29 and is adapted to be struckby the pin 8O during the ringing of the bell, this arrangement taking up any violent jar in case the driving pressure lbecomes too great.

Having described my invention, what I claim is- 1. Inabellringing valve, a suitable casing having an upper and lower section, a perforated guide plate and valve seat separating the two sections, a stern having a hollow portion operating within the guide plate, an eX- haust passage in said hollow portion establishing communication between the upper section and the outer air, a superficial groove on the hollowportion for establishing communication between the two sections, and a piston in the upper section-controlling the-action of the stem, substantially as set forth.

2. A bell ringing-valve'comprising a casing fhaving a lower and an uppersec'tion, a guide plate separating the two sections, a stem having a solid and hollow portion passingv through the guide plate, a terminal head carried by the solid portion of the stem, a reciprocating piston within the upper sectionof the casing having a ycavity forthe reception of thehead of the stem, a retaining nut having alateral opening for securing the stem to the piston, a shoulder at the juncture of the solidand hollow portions against which the nut is adapted to strike,-a superficial longitudinal groove `havinglateral basal extensions on the hollow portion of the stem, a central exhaust passage in the hollow portion of the stem, ports leading from said passage and adapted to establish. communication between `the upper section and the outer air, an exhaust tubular extension leading from the base ofthe lower section, a suitable air inlet opening for the lower section, and a shoulder on the exterior of thehollow portion of -the'stem in the lower section for limiting the movement of the stem in'one direction,substantially-asset forth.

In testimony whereof I'afx my signature in presence of two witnesses.

SAMUEL ARTHUR JENNINGS. Witnesses:

LEE SALE, yEMILl STAREK. 

